Improvement in valve-gear



W. H. PIERCE Valve-Gear.

No. 197,795. Patented Dec. 4,1877.

%% Winona ATTORNEYS.

N. PETERS. PHOTO-LITHDGRAFHER. WASHINGTON D C.

UNITEDS'I'ATES PATENT OFFICE.

WILLIAM H. PIERCE, OF TOLONO, ILLINOIS.

IMPROVEMENT IN VALVE-GEAR. 1

Specification forming part of Letters Patent No. 197,795, dated December 4, 1877; application filed September 10, 1877. I

To all whom it may concern Be it known that I, WILLIAM H. PIERCE, of Tolono, in the county of Ohampaign and State of Illinois, have invented a new and Improved Reciprocating Steam-Engine, of

which the following is a specification:

The invention will first be described in connection with the drawings, and then pointed out in the claim.

1n the annexed drawings, Figure 1 is a side elevation of the improved engine, portions of which are broken away to show the interior of the steam-cylinder. Fig. 2 is a plan view and a horizontal section through the pistoncylinder and valve-chest. Fig. 3 is a sectional view in detail of the hand'lever cut-ofl' and M the steam ports.

Similar letters of reference indicate corresponding parts.

The letter A designates the main or piston cylinder, and B the cylindrical steam-chest,

- in the well-known slide-valve engine, with wheel a by a cam-pin and with the pistonvalve.

A rod from the hub of the balance-wheel a connects with the upright arm K, having a handle, and also two pinsm n, arranged equidistant from the shaft N, which are used for reversing the engine. I

To the inner end of the shaft N is secured an upright arm, V, which is slotted longitudinally for receiving a slide, 6, that is movable by means of a screw and hand wheel, F. The connecting-rod S of the cut-off is pivoted .to the slide 0, so that by adjusting this slide the strokes of the pistons F F can be shortened or lengthened, and the cylinder A supplied with a greater or less amount of steam.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination, with a lever, K, having pins n n, and the shaft N and slotted arm V, of the adjusting devices 0 F, arranged as and for the purpose specified.

WILLIAM H. PIERCE.

Witnesses:

WILLIAM T.'BownR, 'Inos. M. SALISBURY. 

